28653543 has 6 divisors (see below), whose sum is σ = 41388464. Its totient is φ = 19102356.

The previous prime is 28653511. The next prime is 28653553. The reversal of 28653543 is 34535682.

It is a happy number.

28653543 is a `hidden beast` number, since 2 + 86 + 535 + 43 = 666.

It is not a de Polignac number, because 28653543 - 2⁵ = 28653511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28653498 and 28653507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28653553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1591855 + ... + 1591872.

Almost surely, 2^28653543 is an apocalyptic number.

28653543 is a deficient number, since it is larger than the sum of its proper divisors (12734921).

28653543 is a wasteful number, since it uses less digits than its factorization.

28653543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183733 (or 3183730 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 28653543 is about 5352.9004287395. The cubic root of 28653543 is about 306.0032999772.

The spelling of 28653543 in words is "twenty-eight million, six hundred fifty-three thousand, five hundred forty-three".